Adjust Tape A(1), Tape B(2) Respectively, Please Secure The Azimuth Position By Using Locking Paint - Daewoo AMI-921DP Service Manual

E-F BALANCE ADJUSTMENT
1. Connect oscilloscope to test point TP502 and TP503
on CD PCB.
2. Press power switch on.
3. Put test disc(TCD-781) in and press play button then
pause button.
4. Pressing Fast Forward button, adjust RV502 to get
that the oscilloscope waveform is symmetrical on the
bottom in relation to 0V, and check this level.
* Design and specifications may be subject to change without notice.
3. TAPE SECTION
Output Level
Measurement
Input Level
Measurement
Point
Test Tape be used
Tape
MTT-111N
MTT-114N
MTT-5511
HEAD ADJUSTMENT (AZIMUTH)
1. 10KHz test tape(example: MTT-114N) must be used for this adjustment.
2. Connect to VTVM or oscilloscope to the headphone jack or speaker terminal.
3. Press the play button.
4. Adjust the azimuth by using a screw driver to maintain the max. L&R output voltage.

5. Adjust tape A(1), tape B(2) respectively, Please secure the azimuth position by using locking paint.

RECORDING BIAS OSCILLATOR FREQUENCY ADJUSTMENT
1. Connect the frequency counter to TP603, GND.
2. Press the REC button.
3. Adjust L603 to obtain 80 KHz
Point
47 kohm
R-CH
L-CH
47 kohm
±
100Hz
Traverse Waveform
0V
Input Point
VTVM
Contents
3 KHz
10 KHz
Blank
5
ADJUSTMENTS
Scope
Use
Tape Speed Adjustment
Head Azimuth Adjustment
Record Frequency Property
A
B